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1.发明申请SWITCHING BETWEEN MULTIPLE SOFTWARE ENTITIES USING DIFFERENT OPERATING MODES OF A PROCESSOR 有权使用不同操作模式的处理器之间切换多个软件实体公开(公告)号：US20090100250A1
公开(公告)日：2009-04-16
申请号：US12339778
申请日：2008-12-19
CPC分类号： G06F9/45554
摘要： The computer program includes a virtualization software that is executable on the new processor in the legacy mode. The new processor includes a legacy instruction set for a legacy operating mode and a new instruction set for a new operation mode. The switching includes switching from the new instruction set to the legacy instruction set and switching paging tables. Each of the new operating mode and the legacy operating mode has separate paging tables. The switch routine is incorporated in a switch page that is locked in physical memory. The switch page has a first section to store a part of switching instructions conforming to the new instruction set and a second section to store another part of the switching instructions conforming to the legacy instruction set.
摘要翻译： 该计算机程序包括在传统模式下可在新处理器上执行的虚拟化软件。 新处理器包括用于传统操作模式的传统指令集和用于新操作模式的新指令集。 切换包括从新指令集切换到传统指令集和切换寻呼表。 每个新的操作模式和传统操作模式都有独立的分页表。 开关程序被并入被锁定在物理存储器中的开关页面中。 开关页面具有存储符合新指令集的切换指令的一部分的第一部分和存储符合传统指令集的切换指令的另一部分的第二部分。
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2.发明授权Switching between multiple software entities using different operating modes of a processor 有权使用处理器的不同操作模式切换多个软件实体公开(公告)号：US08266628B2
公开(公告)日：2012-09-11
申请号：US12339778
申请日：2008-12-19
CPC分类号： G06F9/45554
摘要： The computer program includes a virtualization software that is executable on the new processor in the legacy mode. The new processor includes a legacy instruction set for a legacy operating mode and a new instruction set for a new operation mode. The switching includes switching from the new instruction set to the legacy instruction set and switching paging tables. Each of the new operating mode and the legacy operating mode has separate paging tables. The switch routine is incorporated in a switch page that is locked in physical memory. The switch page has a first section to store a part of switching instructions conforming to the new instruction set and a second section to store another part of the switching instructions conforming to the legacy instruction set.
摘要翻译： 该计算机程序包括在传统模式下可在新处理器上执行的虚拟化软件。 新处理器包括用于传统操作模式的遗留指令集和用于新操作模式的新指令集。 切换包括从新指令集切换到传统指令集和切换寻呼表。 每个新的操作模式和传统操作模式都有独立的分页表。 开关程序被并入被锁定在物理存储器中的开关页面中。 开关页面具有存储符合新指令集的切换指令的一部分的第一部分和存储符合传统指令集的切换指令的另一部分的第二部分。
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3.发明授权Switching between multiple software entities using different operating modes of a processor in a computer system 有权在计算机系统中使用处理器的不同操作模式在多个软件实体之间切换公开(公告)号：US07478388B1
公开(公告)日：2009-01-13
申请号：US10829780
申请日：2004-04-21
IPC分类号： G06F9/455
CPC分类号： G06F9/45554
摘要： A processor has multiple operating modes, such as the long/compatibility mode, the long/64-bit mode and the legacy modes of the x86-64 microprocessor. Different software entities execute in different ones of these operating modes. A switching routine is implemented to switch from one operating mode to another and to transfer control from one software entity to another. The software entities may be, for example, a host operating system and a virtual machine monitor. Thus, for example, a virtual computer system may comprise a 64-bit host operating system and a 32-bit virtual machine monitor, executing on an x86-64 microprocessor in long mode and legacy mode, respectively, with the virtual machine monitor supporting an x86 virtual machine. The switching routine may be implemented partially or completely in an identity-mapped memory page. Execution of the switching routine may be initiated by a driver that is installed in the host operating system of a virtual computer system.
摘要翻译： 处理器具有多种操作模式，例如长/兼容性模式，长/ 64位模式和x86-64微处理器的传统模式。 不同的软件实体在不同的这些操作模式下执行。 实现切换例程以从一种操作模式切换到另一种操作模式，并将控制从一个软件实体转移到另一个软件实体。 软件实体可以是例如主机操作系统和虚拟机监视器。 因此，例如，虚拟计算机系统可以包括64位主机操作系统和32位虚拟机监视器，分别以长模式和传统模式在x86-64微处理器上执行，虚拟机监视器支持 x86虚拟机。 切换例程可以部分地或完全地实现在身份映射的存储器页面中。 可以由安装在虚拟计算机系统的主机操作系统中的驱动程序启动切换例程的执行。
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